function sw(activeBlock)
{
	d = document.getElementById("descriptionBlock");
	divs = d.getElementsByTagName('div');
	//alert(divs.length);
	
	for(i = 0;i < divs.length; i ++)
	{
		//alert(divs[i].id);
		if(divs[i].id == activeBlock)
		{
			divs[i].style.display="";
			document.getElementById(activeBlock+"_title").className = 'active';
			
		} else {
			//alert(i)
			if(divs.length == (i-1))
				document.getElementById(divs[i].id+"_title").className = 'last';
			else
				document.getElementById(divs[i].id+"_title").className = 'inactive';
				
			if(!isNaN(divs[i].className) && divs[i].className !='image')
				divs[i].style.display="none";
		}
	}
}